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Author: Publisher: ISBN: Category : Languages : en Pages : 320
Book Description
The focus of this analysis is photoproduced ? and ?' mesons. The data were obtained in Hall B at Jefferson Lab using a photon beam at an endpoint energy of 4.016 GeV in the spring and summer of 2004. The Hall B photon tagging system and the CLAS spectrometer were used to collect the data. From this data, and in the course of analysis of the N? and N?' systems, measurements were made of the differential cross sections for ? and ?' photoproduction. The differential cross section measurements for the ? improve the statistics and slightly improve the kinematic range for world data. The results for the ?' represents an almost entirely new dataset which will allow for further analysis of the ?' meson. The results of this measurement for the ?' extend the statistics and kinematic range of world data dramatically.
Author: Publisher: ISBN: Category : Languages : en Pages : 320
Book Description
The focus of this analysis is photoproduced ? and ?' mesons. The data were obtained in Hall B at Jefferson Lab using a photon beam at an endpoint energy of 4.016 GeV in the spring and summer of 2004. The Hall B photon tagging system and the CLAS spectrometer were used to collect the data. From this data, and in the course of analysis of the N? and N?' systems, measurements were made of the differential cross sections for ? and ?' photoproduction. The differential cross section measurements for the ? improve the statistics and slightly improve the kinematic range for world data. The results for the ?' represents an almost entirely new dataset which will allow for further analysis of the ?' meson. The results of this measurement for the ?' extend the statistics and kinematic range of world data dramatically.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The focus of this analysis is photoproduced n and n' mesons. The data were obtained in Hall B at Jefferson Lab using a photon beam at an endpoint energy of 4.016 GeV in the spring and summer of 2004. The Hall B photon tagging system and the CLAS spectrometer were used to collect the data. From this data, and in the course of analysis of the Nn and Nn' systems, measurements were made of the differential cross sections for n and n' photoproduction. The differential cross section measurements for the n improve the statistics and slightly improve the kinematic range for world data. The results for the n' represents an almost entirely new dataset which will allow for further analysis of the n' meson. The results of this measurement for the n' extend the statistics and kinematic range of world data dramatically.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Electro- and photoproduction of[omega](783) from a proton target have been measured in the CLAS detector at the Thomas Jefferson National Accelerator Facility in Newport News, VA. The photoproduction data were taken over a photon energy range from 0.5 to 2.3 GeV, while the electroproduction data was obtained over a W range of 1.8--2.5 GeV/c[sup 2]. Preliminary acceptance-corrected center-of-mass angular distributions have been examined for both data sets.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
This is a brief and selective discussion of meson photoproduction measurements with the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. Meson photo- production is being used as a tool for various investigations, including the spectroscopy of baryons and mesons and the search for vector-meson medium modifications.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
A proposal to search for exotic mesons in photoproduction has been accepted for running at Thomas Jefferson National Accelerator Facility, using the CEBAF Large Acceptance Spectrometer in Hall B. This program will bolster previously-thin statistics in many photoproduction channels, primarily those with charged particles in the final state, as well as seeking to confirm earlier findings in neutral channels, if possible. The promise of the neutral 3pi channel is discussed. In addition, the experiment seeks to study the spectrum of both exotic and ordinary strangeonia. Limitations of the CLAS detector for meson spectroscopy are discussed, as well as possible solutions to minimize such limitations.
Author: Publisher: ISBN: Category : Languages : en Pages : 67
Book Description
We present preliminary experimental results on photoproduction and decay of light mesons measured with CLAS setup at JLAB . This include Dalitz decay of pseudoscalar and vector mesons, radiative decay of pseudoscalar mesons as well hadronic decays of pseudoscalar and vector mesons. The collected high statistics in some of decay channels exceeds the world data by an order of magnitude and some other decay modes are observed for the first time. It is shown how the CLAS data will improve the world data on transition form factors of light mesons, Dalitz plot analyses, branching ratios of rare decay modes and other fundamental properties potentially accessible through the light meson decays.
Author: Publisher: ISBN: Category : Languages : en Pages : 67
Book Description
A large part of the experimental program in Hall B of the Jefferson Lab is dedicated to baryon spectroscopy. Meson photoproduction experiments are essential part of this program. CEBAF Large Acceptance Spectrometer (CLAS) and availability of circularly and linearly polarized tagged photon beams in combination with longitudinally and transversely polarized frozen spin targets provide unique conditions for this type of experiments. For the first time, a complete or nearly complete measurement became possible and will allow model independent extraction of the reaction amplitude. The measurements were complete with both proton and deuteron targets. An overview of the collected experimental data will be presented.
Author: Publisher: ISBN: Category : Languages : en Pages : 167
Book Description
The preliminary results discussed in this theses have been carried out with the Nuclear Physics group of the Department of Physics at the University of Rome Tor Vergata, under the supervision of Prof. A. D'Angelo. On March 2012 I joined the CLAS collaboration at the Thomas Jefferson National Laboratory, in Virginia, USA, and became a term member after a probation period of 9 months. As a member I could participate to the g14 data taking, started on November 18th 2011 and finished on May 18th 2012. In that period I was in charge of the timing calibration of the CLAS forward electromagnetic spectrometer. For the duration of the experiment, I was also responsible of the Raman laboratory located at the University of Rome Tor Vergata, where the Raman measurements were performed. The Raman measurements were crucial for determining the relative concentrations of H2 and D2 in the Hydrogen-Deuteride gas which was used for the target of the g14 experiment.
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Author: Zebulun A. Krahn
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Author: ![Polarization Observables from Two-pion and --] Meson Photoproduction on Polarized HD Target at JLab PDF](https://books.google.com/books/content/images/frontcover/Dr0ZuAEACAAJ?fife=w80-h100)
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